Tube Codes


hey guys...need your insight again as I happened on a batch of tubes....how does one find out the date codes..are they printed on the tubes?..thanx
dan001
I tend to go to www.tubeworld.com They are pricey but their info is good. Compare your tubes with what they show.
Try this link for some codes. This site has other pages also...

http://www.audiotubes.com/mullcode.htm